A thousand year speleothem proxy record of North Atlantic climate from Scotland

Proctor, C. J.; Baker, Andy; Barnes, William; Gilmour, Mabs

doi:10.1007/s003820000077

Cited by 192 publications

(188 citation statements)

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“…Baker et al (1999a) compare annual and subannual laminae in two stalagmites from an English cave site deposited over the last 100 years with instrumental rainfall records. Proctor et al (2000) Baker et al (2002) investigate subannual laminae in a Scottish stalagmite for the last 1000 years in comparison with instrumental and historical data. Genty and Quinif (1996) demonstrate correlations between rainfall (water excess) and laminae thickness in several Recent Belgian stalagmites.…”

Section: Subannual Annual and Supraannual Laminaementioning

confidence: 99%

“…Indeed, careful climate calibration of the Carisbad stalagmite record could provide complimentary data to the tree ring evidence. We draw the readers' attention to Lutenbacher et al (2002) who employed a similar approach of comparing historical, documentary, tree ring, ice core, and stalagmite proxies of winter North Atlantic Oscillation (wNAO): in this case a stalagmite record (Proctor et al, 2000), which had a correlation of r ϭ 0.64 over the instrumental period against the wNAO, yielded a correlation of r ϭ 0.00 against the longer instrumental/documentary based proxy, usefully demonstrating the problems of separating correlation and co-relation when using necessarily short instrumental data.…”

Section: Comparing Stalagmite and Tree Ring Proxiesmentioning

confidence: 99%

“…Finally, we would like to take the opportunity to correct Betancourt et al (2002) in the suggestion that the stalagmite site in Assynt, NW Scotland, published by Proctor et al (2000) is in a climate region with contemporaneous tree ring chronologies. Strong local climate gradients, the predominant calibration of stalagmite laminae width against precipitation rather than temperature, and the lack of local trees to the sample site since regional forest declines in the mid Holocene all prevent a useful comparison with regional tree ring chronologies.…”

Section: Comparing Stalagmite and Tree Ring Proxiesmentioning

confidence: 99%

See 2 more Smart Citations

Letter to the Editor: Comment on “a test of annual resolution in stalagmites using tree rings”

Baker¹,

Genty

2003

Quat. res.

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Section: Subannual Annual and Supraannual Laminaementioning

confidence: 99%

Section: Comparing Stalagmite and Tree Ring Proxiesmentioning

confidence: 99%

Section: Comparing Stalagmite and Tree Ring Proxiesmentioning

confidence: 99%

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Letter to the Editor: Comment on “a test of annual resolution in stalagmites using tree rings”

Baker¹,

Genty

2003

Quat. res.

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“…Existing reconstructions of the winter NAO (WNAO) are almost exclusively based on terrestrial proxies, e.g. ice cores (Appenzeller et al, 1998), stalagmites (Proctor et al, 2000), tree rings (Cook et al, 2002) and snow accumulation rates (Glueck and Stockton, 2001), on documentary data (Rodrigo et al, 2001), or on a combination of historical and other proxy records (Luterbacher et al, 2002). A major drawback of some of these proxies is that environmental conditions during winter are recorded indirectly (e.g.…”

Section: Introductionmentioning

confidence: 99%

A seasonally resolved bottom‐water temperature record for the period AD 1866–2002 based on shells of Arctica islandica (Mollusca, North Sea)

Schöne¹,

Pfeiffer

Pohlmann

et al. 2005

Intl Journal of Climatology

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Existing studies on recent global warming are almost exclusively based on environmental data from the Earth's surface. Seasonal information on the effects of climate change on subsurface settings of mid to high latitudes is extremely scarce. Here, we present the first temperature proxy record from bottom (c. 50 m) water settings of the North Sea employing the oxygen isotope composition of ocean quahog shells. Results indicate that δ 18 O aragonite measured across shells of Arctica islandica can provide reliable estimates (±0.25 to ±0.4°C) of the ambient bottom water temperatures. Over the period AD 1880-2001, warming trends in bottom waters are of the order of 0.042 to 0.138°C/decade. Apparently, the annual maximum-temperature trend shows a twofold increase over the past four decades (0.236°C/decade) while the minimum-temperature trend has remained relatively stable (0.042°C/decade). During the same time interval, however, annual maximum temperatures at the sea surface quadrupled. Shell oxygen-isotope-derived winter temperatures also provide a proxy for the winter North Atlantic oscillation index (WNAO). Some 28 to 50% of the variability in minimum temperatures below the thermocline can be explained by changes of the WNAO. Our new tool enables testing and verification of climate models prior to the 20th century greenhouse forcing.

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“…Different approaches to a NAOI reconstruction have been established (Cook et al 1998Appenzeller et al 1998;Luterbacher et al 1999;LUT;Garcia et al 2000;Cullen et al 2000;Proctor et al 2000;Glueck and Stockton 2001;Rodrigo et al 2001;Vinther et al 2003). However, Schmutz et al (2000) raised some doubts about the reliability of many of the reconstructions that were based on natural proxies.…”

Section: Introductionmentioning

confidence: 99%

Scale-Dependent Reconstruction of the NAO Index

Timm¹,

Ruprecht²,

Kleppek³

2004

J. Climate

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A method is presented to reconstruct decadal variations of the North Atlantic Oscillation (NAO). The spectral characteristics of the NAO on time scales of decades and longer are of particular interest for the understanding of North Atlantic ocean-atmosphere interactions. The reconstruction is based on a transfer model calibration that uses bandpass-filtered time series. The maximum overlap discrete wavelet transform (MODWT) is applied for decomposing the time series variance into different time scales. A total of 43 proxies, including Greenland ice cores and European tree-ring chronologies, are selected and regionally grouped providing four independent reconstructions for the period 1700-1978. The mean reconstruction agrees well with two recently published reconstructions during most of the time period. However, there are considerable differences in the earliest part before 1750. Running correlations between the reconstructions indicate that time-dependent relations exist among the different NAO reconstructions. The results suggest that the geographical distribution of proxies strongly affects the reconstruction and could explain some of the apparent discrepancies among the reconstructions recently published in literature. In the early eighteenth century, external forcing (solar, volcanic) seems to mask the NAO signature within the proxies.

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A thousand year speleothem proxy record of North Atlantic climate from Scotland

Cited by 192 publications

References 0 publications

Letter to the Editor: Comment on “a test of annual resolution in stalagmites using tree rings”

Letter to the Editor: Comment on “a test of annual resolution in stalagmites using tree rings”

A seasonally resolved bottom‐water temperature record for the period AD 1866–2002 based on shells of Arctica islandica (Mollusca, North Sea)

Scale-Dependent Reconstruction of the NAO Index

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